Improvement in corn and cob mills



J. H, KING.

Corn and Cob-Mills.

No. 133,455: Patented Nov.2 6 ,1872.

Jay-14 VVz'Zneas w J? i UNITED STATES JOHN H. KING, OF MARTINSBURG, WESTVIRGINIA.

IMPROVEMENT IN CORN AND COB MILLS.

Specification forming part of Letters Patent No. 133,455, dated November26, 1872.

To all whom it may concern:

Be it known that I, JOHN H. KING, of Martinsburg, in the county ofBerkeley and State of West Virginia, have made certain new and usefulimprovements in the construction and arrangement of a portable mill forcrushing cobs and grinding grain, of which the following is aspecification: I

My invention relates to portable mills f0 crushing and grinding the coband corn or other grain together or separately; and it consists in thearrangement hereinafter described and claimed.

In the accompanying drawing, Figure 1 is a plan or top view of myimproved crushing and grinding mill. Fig. 2 is a central verticalsection of the same taken in the line at w of Fig. 1. Fig. 3 is a viewillustrating one of the series of grinding-plates secured to the base ofthe hopper; and Fig. 4 is a like view, illustrating the shape and dressof one of the series of grinding-plates constituting a part of theinterior revolving crusher, each grindingplate in both series being thesegment of a circle, the outer rim of each set to be the same radius,though the inner rim of the lower set is somewhat greater than that ofthe series secured to the hopper.

Ais strongrectangular frame, furnished with four or more radial braces,B, the outer ends of each being bolted to the frame and their inner endsbolted to the flange G, forming part of a central cylindrical hopper, D,by which means the hopper is rigidly secured to the main frame. Asuitably-shaped casting, E, furnished with three or more verticaluprights, E, is bolted to the outer side of case D, the lower centralpart of which serves as a journal-seat for the lower end of thedrivingshaft F, the upper end of which has its bearing in a transversecasting, G, bolted to the inner upper orifice of hopper D, as shown inFig. 1 of the drawing. Secured to the drivingshaft F is a central convexcrusher, H, on the outer surface of which is cast a series of lugs, a,arranged to run in such proximity to a series of lugs, 12, cast on theinterior of hopper D, as that they approach each other in the series ator near the base, leaving, however, sufficient space at Z for thecrushed substance to pass within the action of the grinding-surfacesforming a part of the base of hopper D and disk I. The shaft F isfurnished with a suitable band-wheel, J, for imparting the requiredrotary motion to the crusher H. The disk I has a pulley, I, on its lowersurface to receive a belt for communicating motion to it, and it isrotated rapidly to effect the grinding, being mounted loosely ontheshaft F, while the crusher H, being fast on said shaft, and rotated by alarger pulley, J, has a slower rotary motion. Were the motions of thedisk I and crusher H at the same rate of speed the cobs would beprevented from entering between the crusher H and the teeth of thehopper. The revolving disk Iis furnished on its upper face with a givennumber of sectional grindingplates, 0, bolted annularly on said disk,encircling the base of crusher H, each plate in the series being castwith a suitable dress for grinding, and slightly tapering toward theirperipheries so as to conduct the ground substance and deliver it outaround the circumference of disk I. Bolted to the lower face of flange Gis a series of grinding-plates, d, in dress and outer angle ofinclination similar to the angle and grinding-surface of .plates 0, andcast sufficiently wide to come, when in position, flush with theinterior orifice constituting'the base-opening of hopper D, so as toleave the relative difference in the width of the two series ofsectional grinding-plates c and d somewhat near the space shown at Z,Fig. l; and also illustrated by Figs. 3 and 4 of the drawing.

An important feature of this invention consists in having bothstationary and rotary I grinding-surfaces cast in sections, so that, atany time, when, by wear or accident, all or any one of said platesbecomes injured, duplicates may be substituted therefore atcomparatively a trifling cost, and with but slight expenditure of timeand labor, by removing the taps used to bolt them to the flange O anddisk I.

Operation.

The corn-cobs and corn or other grain is fed into the upper orifice ofhopper D either separately or en masse, and, occupying the space thereinin. and around the rotary crusher H, comes in contactwith the rotaryteeth a and stationary teeth b, by which it becomes crushed to a sizesuited to enter at the space Z and be brought within the action of thegrinding-surfaces 0 d, where it is ground and delivered, as indicated byarrows shown in Fig. 2.

I contemplate locating beneath the disk I a suitable receiver to catchthe ground substance as it passes out from the action of the annulargrindingsurfaces forming a part of the hopper D and disk I, which may besecured to the vertical castings E, or otherwise made to constitute apart of the main frame.

Having described my invention, I claim- In a mill for crushing andgrinding cobs, grain, &c., the arrangement of the crusher H on theshaft. F rotated by the pulley J, in combination with the disk I,mounted loosely on i said shaft F and driven by a smaller pulley,I, forthe purpose of securing a slower motion for the cob-crusher, in orderthat the cobs may enter readily, while a more rapid motion is impartedto the grinding-disk to efi'ect the grinding, as herein shown anddescribed. a

In testimony whereof I have hereunto signed

